Category Archives: DIY



Just playing around with a temperature sensor and arduino board.


Arduino Mega
Omron D6T
32×32 RGB panel

Connection scheme

Here are the pin connections between LED panel connector and Arduino:

Panel Pin Label Panel Connector Pin # Arduino Pin Notes
R0 1 2 Red data (columns 1-16)
G0 2 3 Green data (columns 1-16)
B0 3 4 Blue data (columns 1-16)
GND 4 GND Ground
R1 5 5 Red data (columns 17-32)
G1 6 6 Green data (columns 17-32)
B1 7 7 Blue data (columns 17-32)
GND 8 GND Ground
A 9 A0 Demux input A0
B 10 A1 Demux input A1
C 11 A2 Demux input A2
D 12 A3 Demux input E1, E3 (32×32 panels only)
CLK 13 11 LED drivers’ clock
STB 14 10 LED drivers’ latch
OE 15 9 LED drivers’ output enable
GND 16 GND Ground


Panel connector pin numbering convention: Pin 1 is top left (R0), pin 2 is to the right of pin 1, pin 3 is below pin 1, pin 4 is to the right of pin 3, etc. Pin 16 is the bottom right.





This project is about building a reflow oven. I thought that the project sounded real fun but unfortunately I did not have the time to do everything myself. I decided to buy the control HW/SW from someone else. When looking around a bit the obvious choice became ControLeo2. You can buy this from ebay for a couple of dollars and the guy who manufactures them is real nice. It is actually quite hard to find a decent small reflow oven for a decent price. Either you buy a professional one for 1000 of $, or you buy a crappy chinese one, that probably will burn your ICs to crust. In other words this project is not a big one, but still kinda fun and you cannot turn down a perfectly good reflow oven for your prototyping stuff 😀
korona_7korona_5  korona_18